How long is the flight from United States to Northern Ireland?

Flight times vary depending on what airport in United States you fly out of and what airport in Northern Ireland you fly into. For example, flying from New York to Belfast Intl Airport takes 10h 55m on average. On the other hand, flying from Boston to Belfast Intl Airport takes 11h 05m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What is the cheapest airline that flies from United States to Northern Ireland?

British Airways, Delta, and KLM are the most popular carriers operating from United States to Northern Ireland

When did momondo last update prices for flights from United States to Northern Ireland?

Prices for flights from United States to Northern Ireland were last updated today.

How many operators does momondo search for flights from United States to Northern Ireland?

As of October 2026, there is 1 operator available to choose from for flights from United States to Northern Ireland.

How old do you have to be to fly from United States to Northern Ireland?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from United States to Northern Ireland.

What documentation or ID do you need to fly to Northern Ireland?

The travel and health documents required for your trip to Northern Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Northern Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$232 Cheap Flights from the United States to Northern Ireland in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from the United States to Northern Ireland

Round-trip

One-way

Last minute

Recent round-trip flight deals from the United States to Northern Ireland

Enter your travel dates to find the best prices.

9:30 pm - 2:35 pmBOS Boston Logan Intl-BHD Belfast City

12h 05m1 stop London Heathrow

11:45 am - 7:40 pmBHD Belfast City-BOS Boston Logan Intl

12h 55m1 stop London Heathrow

$720British Airways

Wed, Jan 13 - Sat, Jan 16

12:45 am - 9:40 amEWR Newark-BHD Belfast City

27h 55m2 stops Porto London Gatwick

7:20 am - 10:15 pmBHD Belfast City-EWR Newark

19h 55m2 stops London Gatwick Lisbon Humberto Delgado

$733Multiple Airlines

Mon, Nov 30 - Tue, Dec 8

6:35 pm - 1:15 pmBOS Boston Logan Intl-BHD Belfast City

13h 40m1 stop London Heathrow

1:35 pm - 7:40 pmBHD Belfast City-BOS Boston Logan Intl

11h 05m1 stop London Heathrow

$752British Airways

Wed, Jan 13 - Fri, Jan 15

5:15 pm - 3:30 pmBOS Boston Logan Intl-BHD Belfast City

17h 15m2 stops Dublin Manchester

6:30 pm - 8:15 pmBHD Belfast City-BOS Boston Logan Intl

30h 45m3 stops Edinburgh Turnhouse Barcelona-El Prat Lisbon Humberto Delgado

$756Multiple Airlines

Wed, Nov 11 - Wed, Nov 18

12:45 am - 9:40 amEWR Newark-BHD Belfast City

27h 55m2 stops Porto London Gatwick

7:30 am - 10:30 pmBHD Belfast City-EWR Newark

20h 00m3 stops London Gatwick Lisbon Humberto Delgado Porto

$774Multiple Airlines

Mon, Dec 7 - Sun, Dec 13

5:40 pm - 7:00 pmEWR Newark-BHD Belfast City

20h 20m2 stops Lisbon Humberto Delgado London Gatwick

7:30 am - 10:30 pmBHD Belfast City-EWR Newark

20h 00m3 stops London Gatwick Lisbon Humberto Delgado Porto

$782Multiple Airlines

Wed, Dec 9 - Sun, Dec 13

12:45 am - 1:35 pmEWR Newark-BHD Belfast City

31h 50m3 stops Porto Lisbon Humberto Delgado London Gatwick

7:30 am - 10:30 pmBHD Belfast City-EWR Newark

20h 00m3 stops London Gatwick Lisbon Humberto Delgado Porto

$783Multiple Airlines

Mon, Dec 7 - Sun, Dec 13

5:45 pm - 5:20 pmEWR Newark-BHD Belfast City

18h 35m2 stops Dublin Manchester

2:55 pm - 3:20 pmBHD Belfast City-EWR Newark

29h 25m3 stops London Luton Madrid Barajas Lisbon Humberto Delgado

$796Multiple Airlines

Thu, Nov 12 - Thu, Nov 19

12:45 am - 9:40 amEWR Newark-BHD Belfast City

27h 55m2 stops Porto London Gatwick

7:30 am - 10:10 pmBHD Belfast City-EWR Newark

19h 40m2 stops London Gatwick Lisbon Humberto Delgado

$801Multiple Airlines

Mon, Dec 7 - Sun, Dec 13

6:00 pm - 1:35 pmBOS Boston Logan Intl-BHD Belfast City

14h 35m2 stops Lisbon Humberto Delgado London Gatwick

2:20 pm - 2:40 pmBHD Belfast City-BOS Boston Logan Intl

29h 20m3 stops London Gatwick Barcelona-El Prat Lisbon Humberto Delgado

$802Multiple Airlines

Sun, Jan 10 - Tue, Jan 26

Recent last minute flight deals from the United States to Northern Ireland

Enter your travel dates to find the best prices.

9:10 pm - 6:10 pmPHX Phoenix Sky Harbor Intl-BHD Belfast City

13h 00m1 stop London Heathrow

6:45 am - 6:25 pmBHD Belfast City-PHX Phoenix Sky Harbor Intl

18h 40m1 stop London Heathrow

$8,541British Airways

Fri, Oct 23 - Fri, Oct 30

4:05 pm - 6:10 pmPHX Phoenix Sky Harbor Intl-BHD Belfast City

18h 05m2 stops Dallas/Fort Worth London Heathrow

8:35 am - 6:25 pmBHD Belfast City-PHX Phoenix Sky Harbor Intl

16h 50m1 stop London Heathrow

$8,544British Airways

Fri, Oct 23 - Fri, Oct 30

1:03 pm - 3:30 pmPHX Phoenix Sky Harbor Intl-BHD Belfast City

18h 27m2 stops Philadelphia London Heathrow

1:35 pm - 12:44 amBHD Belfast City-PHX Phoenix Sky Harbor Intl

18h 09m2 stops London Heathrow Chicago O'Hare Intl

$8,553British Airways

Fri, Oct 23 - Fri, Oct 30

4:10 pm - 6:10 pmPHX Phoenix Sky Harbor Intl-BHD Belfast City

18h 00m1 stop London Heathrow

1:35 pm - 9:36 amBHD Belfast City-PHX Phoenix Sky Harbor Intl

27h 01m2 stops London Heathrow New York John F Kennedy Intl

$9,799Multiple Airlines

Fri, Oct 23 - Fri, Oct 30

4:10 pm - 6:10 pmPHX Phoenix Sky Harbor Intl-BHD Belfast City

18h 00m1 stop London Heathrow

10:10 am - 10:38 pmBHD Belfast City-PHX Phoenix Sky Harbor Intl

19h 28m3 stops Birmingham Dublin Chicago O'Hare Intl

$9,817Multiple Airlines

Fri, Oct 23 - Fri, Oct 30

9:10 pm - 6:10 pmPHX Phoenix Sky Harbor Intl-BHD Belfast City

13h 00m1 stop London Heathrow

8:35 am - 6:25 pmBHD Belfast City-PHX Phoenix Sky Harbor Intl

16h 50m1 stop London Heathrow

$9,841Multiple Airlines

Fri, Oct 23 - Fri, Oct 30

7:15 am - 9:30 amPHX Phoenix Sky Harbor Intl-BHD Belfast City

42h 15m3 stops Los Angeles Hong Kong Intl London Heathrow

6:45 am - 3:10 pmBHD Belfast City-PHX Phoenix Sky Harbor Intl

39h 25m3 stops London Heathrow Hong Kong Intl Seattle/Tacoma Intl

$40,227Multiple Airlines

Fri, Oct 23 - Fri, Oct 30

7:15 am - 9:30 amPHX Phoenix Sky Harbor Intl-BHD Belfast City

42h 15m3 stops Los Angeles Hong Kong Intl London Heathrow

6:45 am - 3:10 pmBHD Belfast City-PHX Phoenix Sky Harbor Intl

39h 25m3 stops London Heathrow Hong Kong Intl Seattle/Tacoma Intl

$40,228Multiple Airlines

Fri, Oct 23 - Fri, Oct 30

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British Airways flights from United States to Northern Ireland

Our best British Airways deals on United States to Northern Ireland flight tickets

British Airways

Jan 13

BOS9:30 pmBoston Logan Intl

12h 05m

1 stop

BHD2:35 pmBelfast City

Jan 16

BHD11:45 amBelfast City

12h 55m

1 stop

BOS7:40 pmBoston Logan Intl

$720

British Airways

Jan 13

BOS6:35 pmBoston Logan Intl

13h 40m

1 stop

BHD1:15 pmBelfast City

Jan 15

BHD1:35 pmBelfast City

11h 05m

1 stop

BOS7:40 pmBoston Logan Intl

$752

British Airways

Mar 22

SFO9:35 pmSan Francisco

14h 00m

1 stop

BHD6:35 pmBelfast City

Mar 31

BHD6:30 amBelfast City

15h 20m

1 stop

SFO1:50 pmSan Francisco

$857

Aer Lingus flights from United States to Northern Ireland

Our best Aer Lingus deals on United States to Northern Ireland flight tickets

Aer Lingus

Jan 4

SFO5:20 pmSan Francisco

19h 40m

2 stops

BHD9:00 pmBelfast City

Jan 10

BHD10:00 amBelfast City

37h 35m

2 stops

SFO3:35 pmSan Francisco

$1,117

Aer Lingus

Nov 16

LAX8:25 pmLos Angeles

30h 00m

2 stops

BHD10:25 amBelfast City

Nov 20

BHD9:50 amBelfast City

16h 50m

2 stops

LAX6:40 pmLos Angeles

$1,123

Aer Lingus

Nov 7

ORD3:55 pmChicago O'Hare Intl

14h 05m

2 stops

BHD12:00 pmBelfast City

Nov 12

BHD9:50 amBelfast City

14h 30m

2 stops

ORD6:20 pmChicago O'Hare Intl

$1,136

momondo Fare Finder

Use the filters below to find and compare flights from the United States to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonBelfast

BOS Boston Logan Intl - BHD Belfast City

BOSBHD

Boston Logan Intl

Wed 1/13

9:30 pm-2:35 pm

1 stop12h 05m

Belfast City

Sat 1/16

11:45 am-7:40 pm

1 stop12h 55m

$720

NewarkBelfast

EWR Newark - BHD Belfast City

EWRBHD

Newark

Mon 11/30

12:45 am-9:40 am

2 stops27h 55m

Belfast City

Tue 12/8

7:20 am-10:15 pm

2 stops19h 55m

$733

Quickest round-trip

BostonBelfast

BOS Boston Logan Intl - BHD Belfast City

BOSBHD

Boston Logan Intl

Wed 1/13

6:35 pm-1:15 pm

1 stop13h 40m

Belfast City

Fri 1/15

1:35 pm-7:40 pm

1 stop11h 05m

$752

BostonBelfast

BOS Boston Logan Intl - BHD Belfast City

BOSBHD

Boston Logan Intl

Wed 11/11

5:15 pm-3:30 pm

2 stops17h 15m

Belfast City

Wed 11/18

6:30 pm-8:15 pm

3 stops30h 45m

$756

NewarkBelfast

EWR Newark - BHD Belfast City

EWRBHD

Newark

Mon 12/7

12:45 am-9:40 am

2 stops27h 55m

Belfast City

Sun 12/13

7:30 am-10:30 pm

3 stops20h 00m

$774

NewarkBelfast

EWR Newark - BHD Belfast City

EWRBHD

Newark

Wed 12/9

5:40 pm-7:00 pm

2 stops20h 20m

Belfast City

Sun 12/13

7:30 am-10:30 pm

3 stops20h 00m

$782

NewarkBelfast

EWR Newark - BHD Belfast City

EWRBHD

Newark

Mon 12/7

12:45 am-1:35 pm

3 stops31h 50m

Belfast City

Sun 12/13

7:30 am-10:30 pm

3 stops20h 00m

$783

NewarkBelfast

EWR Newark - BHD Belfast City

EWRBHD

Newark

Thu 11/12

5:45 pm-5:20 pm

2 stops18h 35m

Belfast City

Thu 11/19

2:55 pm-3:20 pm

3 stops29h 25m

$796

NewarkBelfast

EWR Newark - BHD Belfast City

EWRBHD

Newark

Mon 12/7

12:45 am-9:40 am

2 stops27h 55m

Belfast City

Sun 12/13

7:30 am-10:10 pm

2 stops19h 40m

$801

BostonBelfast

BOS Boston Logan Intl - BHD Belfast City

BOSBHD

Boston Logan Intl

Sun 1/10

6:00 pm-1:35 pm

2 stops14h 35m

Belfast City

Tue 1/26

2:20 pm-2:40 pm

3 stops29h 20m

$802

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from United States to Northern Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Northern Ireland?

The cheapest month to fly to Northern Ireland from United States is in January. Flight prices, which tend to average around $603, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Northern Ireland from United States during March instead. Flights to Northern Ireland in March, while not as cheap as those in January, still average around $609.

Can stopping save me money on United States to Northern Ireland flights?

You could potentially save up to 19% on your flight if you consider stops on a United States to Northern Ireland flight.

Cheap United States to Northern Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Northern Ireland

Best Price Found	$232
Fastest flight time	10h 10m
Direct flights	None

The best one-way flight to Northern Ireland from United States in the past 72 hours is $232. The best round-trip flight deal from United States to Northern Ireland found on momondo in the last 72 hours is $720.

The fastest flight from United States to Northern Ireland takes 10h 10m

There are no direct flights from United States to Northern Ireland. There are no popular flight routes from United States to Northern Ireland.

Search flight deals

Frequently asked questions about flying from the United States to Northern Ireland

When did momondo last update prices for flights from United States to Northern Ireland?
Prices for flights from United States to Northern Ireland were last updated today.
How many operators does momondo search for flights from United States to Northern Ireland?
As of October 2026, there is 1 operator available to choose from for flights from United States to Northern Ireland.
How old do you have to be to fly from United States to Northern Ireland?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from United States to Northern Ireland.
What documentation or ID do you need to fly to Northern Ireland?
The travel and health documents required for your trip to Northern Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Northern Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from United States to Northern Ireland

Compare and see reviews for airlines that fly from United States to Northern Ireland with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $586	Free Cancellation	Rating 6.7 8,265 reviews		Search British Airways flights
Delta	PriceFrom $973	Free Cancellation	Rating 7.8 8,649 reviews		Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from United States to Northern Ireland?

Finding the right flight to Northern Ireland from United States is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Northern Ireland quick and easy, saving you time and money.

Can I find flights from United States to Northern Ireland with flexible booking policies on momondo?

Flights from United States to Northern Ireland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from United States to Northern Ireland?

Once you have performed a search for United States to Northern Ireland flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from United States to Northern Ireland right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of United States to Northern Ireland flights. All you need is a valid email address and we will do the rest; it is that quick and easy.